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From "Jackson Chung (Commented) (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-3220) add describe_ring to cli
Date Wed, 16 Nov 2011 05:32:52 GMT


Jackson Chung commented on CASSANDRA-3220:

working on the "unexpected block data"

it seems like i cannot return any object coming from thrift in the jmx (./interface/thrift/gen-java/org/apache/cassandra/thrift/*)

I tried by creating a test method that simply return a TokenRange, a KeyRange, an EndpointDetails
in the StorageServiceMBean (return new <the object>())

Is there a restriction on that? 

Maybe I should make the jmx method to return a String (List of String?) instead?
> add describe_ring to cli
> ------------------------
>                 Key: CASSANDRA-3220
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tools
>            Reporter: Jackson Chung
>            Assignee: Jackson Chung
>            Priority: Minor
>             Fix For: 1.0.4
>         Attachments: patch3220.diff, patch3220.v2.diff, patch3220.v3.diff, patch3220.v4.diff
> Lately I have found the describe_ring feature was needed to debug/analyze issue, but
the cli does not have this available.
> So just in case it is useful, please see the attached patch.
> here is the sample output:
> {noformat}
> [default@unknown] help;
> ...
> ...
> decr                    Decrements a counter column.
> describe ring           Describe the token range information.
> describe cluster        Describe the cluster configuration.
> ...
> ...
> [default@unknown] help describe ring;
> describe ring <keyspace>;
> Describes the token range settings for the named keyspace.
> Required Parameters:
> - keyspace: Name of the keyspace to describe the token range.
> Examples:
> describe ring <keyspace>; - Describes the token range settings for the named keyspace.
> [default@unknown] describe ring Keyspace3;
> TokenRange: 
>         TokenRange(start_token:9739248273232290250409572410247679660, end_token:9739248273232290250409572410247679660,
endpoints:[], rpc_endpoints:[], endpoint_details:[EndpointDetails(host:,
port:9160, datacenter:168)])
> [default@unknown] describe ring fooks;
> Keyspace with name 'fooks' wasn't found, , please, authorize to one of the keyspaces
> [default@unknown] describe ring;
> Syntax error at position 13: mismatched input ';' expecting set null
> {noformat}

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